Observational Difficulties
From Author Wars - https://authorwars.com/books/observational-difficulties-117534.html
Overview:
- Title: Observational Difficulties
- Author: George W. Harper
- Year: 1963
- Type: Essays
- Series: Science Fact (Analog)
Editions/Publications:
- Unknown. Analog Science Fact -> Science Fiction, May 1963 (Unknown, George W. Harper, Condé Nast, $0.50, 100 pages, bedsheet, MAGAZINE)